Seagrass is one of the important ecosystems in shallow coastal and marine waters, because it has many roles, both ecologically and economically. Bontang City is one area that has a vast seagrass ecosystem. Management of seagrass ecosystems in Bontang City, of course, wants the existence of sustainable economic development, but on the other hand, sometimes increasing economic needs based on natural resources (resource base), often create a dilemma for the sustainability of natural resources. This happens because the consumption needs of the community are often not supported by good planning and management in utilizing natural resources so that the deterioration of environmental quality is often seen as a cost that must be paid in a process of economic development. The purposes of this study are 1). Identifying forms of utilization from seagrass ecosystems, 2) knowing the economic value of seagrass ecosystems. The sampling method used was purposive sampling. The results of the study revealed that fishing activities with splint catches and nets were a form of seagrass ecosystem utilization activities. Based on the results of data analysis, it is known that the total economic value of 4 (four) utilization of seagrass ecosystems in Bontang City is Rp. 7,081,050,816,042 per year. The utilization value with the largest proportion comes from the value of indirect benefits which is equal to 95.66%, and the lowest proportion is the option value.

Jenebora was one of the areas directly affected by the oil spill in the waters of Balikpapan Bay in 2018. It is estimated that almost 80% of the mangroves in the area were damaged. Oil spills into the sea have the potential to have a negative impact on the survival of the flora and fauna in it. This study aimed to measure the economic impact of the oil spill in Balikpapan Bay on the utilization and management of mangrove resources in Jenebora Village, Penajam Paser Utara. Economic valuation is a form of analytical approach used to assess the economic impact of mangrove damage. The results showed that the damage caused by the oil spill on the mangrove ecosystem was estimated a Rp. 41,082,027,068/year or Rp. 2,334,206,083ha/year. This value is estimated from the loss of fish resources that have economic value, as well as the damage to the function of the mangrove ecosystem as archery abrasion, reducing pollution and producing carbon. The policy recommendations in this study are the need for actions and rules related to the management and control of marine pollution that are integrated with other regulations, the need for Pertamina to improve equipment maintenance and immediately carry out post-event environmental restoration and ensure the allocation of fishing areas for traditional fishermen and continuous assistance to environmental recovery.

With a qualitative research approach, this study aims to obtain information from key informants regarding how to solve maritime spatial conflicts in Samboja District. In-depth interviews were conducted with the Head of Tanjung Harapan Village, the Head of UPT Air Brackish and the head of the fishing group. Recorded data were transcribed and analyzed deductively based on the themes and categories found. This study found that that the resolution of fishing zone conflicts in Samboja District is carried out horizontally and vertically. Horizontally, conflict resolution is carried out by dividing the fishing ground based on the type of fishing gear and fishing capacity. Active fishing gear is not placed near to passive fishing gear. On the other hand, the greater the fishing capacity, the farther the area of operation is from the coast. Vertically, the same type of fishing gear is arranged according to its depth so that several gears overlap but do not interfere with each other. Those local and participatory conflict resolution initiatives are important to achieve sustainable and equitable use of coastal and marine areas.

This research aim was to analze prosperity level based on indicator of Fisherman Exchange Value (Nilai Tukar Nelayan/NTN) and Index of Fisherman Exchange Value (Indeks Nilai Tukar Nelayan/INTN) community business group with capture Fisheries in Handil Terusan Village. This research was conducted on May 2021 to June 2022 in the Handil Terusan Village, Anggana Sub-District, Kutai Kartanegara Regency. Research was used the case study method and applied purposive sampling to select 25 respondents of 5 fishing groups. Data were analyzed by qualitative-quantitative descriptive method that focused on Fisherman Exchange Value (Nilai Tukar Nelayan/NTN) and Index of Fisherman Exchange  Value (Indeks Nilai Tukar Nelayan/INTN). The results of the NTN analysis show that in general the NTN value for fishing families from 5 joint capture fisheries business groups in 2020 and 2021 is above 1 and has increased. The results of the INTN analysis of fishing families in 2020 and 2021 show that 3 groups of Fishermen have increased and 2 groups of Fishermen have decreased. Key Words  : Fisherman Exchange Value (NTN), Handil Terusan Village, Index of Fisherman Exchange Value /INTN, Prosperity

Ikan Layang (Decapterus spp) menjadi satu di antara ikan yang selalu ada di setiap kegiatan pemasaran di Kota Samarinda, hal ini terlihat diberbagai pasar, baik pasar besar, pasar kecil, pasar malam maupun pedagang keliling yang hampir selalu menawarkan jenis ikan layang.  penelitian ini bertujuan menganalisis pengaruh faktor pendapatan, jumlah keluarga dan harga terhadap permintaan ikan Layang (Decapterus spp) di Kota Samarinda. Pengambilan sampel menggunakan Purposive Sampling, yaitu ibu rumah tangga yang bekerja. Analisis data yang digunakan yaitu analisis regresi linier berganda. Hasil analisis regresi diperoleh persamaan  = -.664 + 0,0000001.941 X1 - 0.040 X2 - 3.454X3, dimana pengaruh variabel pendapatan terhadap permintaan ikan layang, semakin tinggi pendapatan makan permintaan juga meningkat. Uji F menunjukkan bahwa secara serempak variabel X (pendapatan, jumlah keluarga dan harga) berpengaruh secara signifikan  terhadap variabel Y (permintaan ikan Layang). Uji adjusted R2 sebesar 0.326 atau 32%, yang menunjukkan bahwa variabilitas variabel dependen yang dapat dijelaskan oleh variabilitas variabel independent sebesar 32%, sedangkan sisanya 68% dipengaruhi oleh variabel lain diluar model penelitian.

Bawis fish that is an endemic species and living in the seagrass biota has been found many in marine water of Bontang city. The activity of catching on this fishes has been worked by fishermen who were staying in Bontang city. Hence, if, the catching activity on this fishes without control in the entire year, it will be predicted overfishing and decreasing resources. The aim of this research was to determine the degradation rate and depreciation rate of Bawis fishes’ resources in Marine water of Bontang city. The data were collected with interview method and questionnaire to the splint and nets fishermen, and stakeholder, as well as from the capture fisheries division of DKP3 institution in Bontang city for collecting of data of time series. The results showed that Bawis fishes’ resources in Bontang city were in degradation and depreciation indicated since 2013. It has been showed by the standard coefficient value was 0.59 and 0.64 more than 0.5 in 2013, further, in 2016 increased to 0.619 and 0.68 respectively. The values of increasing were each more than 0.5, it means that Bawis fishes’ resources in Bontang city were in degradation and depreciation.

The purpose of this study was to measure the amount of net loss/profit resulting from the tiger prawn marketing business and to measure the feasibility based on the indicators of RCR, BEP, and Payback Period, as well as ROI. The types of data collected are primary and secondary according to the research objectives. The sampling technique used was the purposive sampling method with 6 selected samples. The results of this study indicate that the total net profit obtained is Rp. 35,213,401 during the production period in February 2022. The business financial feasibility analysis has an RCR value of 1.04, a production BEP of 676kg, a price BEP of Rp. 98,021, a sales BEP of Rp. 917,039.983, and a payback period of 7 years and 15 days, and the ROI value is 14%, so the effort on CV. Surya Indah Perkasa deserves to be continued.

This research was aimed to determine the marketing channels, costs, margins, and farmer's share of white shrimp (Litopenaeus vannamei) in Kuala Samboja Village, Samboja Sub-district, Kutai Kartanegara Regency. The research was conducted in Kuala Samboja Village, Samboja Sub-district, Kutai Kartanegara Regency. The samples used in the study were 15 fishermen and 2 white shrimp (Litopenaeus vannmei) traders. The sampling method used was purposive sampling and snowball sampling. The results showed that: there are 2 marketing channels for white shrimp (Litopenaeus vannamei), namely the level zero (0) marketing channel and the level two (2) marketing channel with 2 types; meanwhile the marketing costs at the level zero (0) marketing channel is Rp. 392/kg, at the level two (2) type 1 marketing channel is Rp. 3.043/kg, and at the level two (2) type 2 marketing channel is Rp. 2,487/kg. The total marketing margin is at level two (2) marketing channel with Rp. 67,500/kg and Rp. 36,700/kg. And the highest farmer's share is at the zero level marketing channel (0) which is equal to 100% and is the most efficient marketing channel. Keywords: Marketing Channels, Costs, Margins, Farmer's Share, Kuala Samboja